162516643 has 4 divisors (see below), whose sum is σ = 169582608. Its totient is φ = 155450680.

The previous prime is 162516637. The next prime is 162516677. The reversal of 162516643 is 346615261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 162516643 - 2⁹ = 162516131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162516599 and 162516608.

It is not an unprimeable number, because it can be changed into a prime (162516623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3532948 + ... + 3532993.

It is an arithmetic number, because the mean of its divisors is an integer number (42395652).

Almost surely, 2^162516643 is an apocalyptic number.

162516643 is a deficient number, since it is larger than the sum of its proper divisors (7065965).

162516643 is an equidigital number, since it uses as much as digits as its factorization.

162516643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065964.

The product of its digits is 25920, while the sum is 34.

The square root of 162516643 is about 12748.2015594357. The cubic root of 162516643 is about 545.7150706912.

The spelling of 162516643 in words is "one hundred sixty-two million, five hundred sixteen thousand, six hundred forty-three".